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mirror of https://github.com/go-gitea/gitea synced 2025-07-06 18:47:19 +00:00
This commit is contained in:
techknowlogick
2021-02-28 18:08:33 -05:00
committed by GitHub
parent 030646eea4
commit 47f6a4ec3f
947 changed files with 26119 additions and 7062 deletions

View File

@ -13,13 +13,27 @@ var htmlEscaper = [256][]byte{
}
func escapeHTML(w io.Writer, s []byte) {
escapeEntities(w, s, false)
}
func escapeAllHTML(w io.Writer, s []byte) {
escapeEntities(w, s, true)
}
func escapeEntities(w io.Writer, s []byte, escapeValidEntities bool) {
var start, end int
for end < len(s) {
escSeq := htmlEscaper[s[end]]
if escSeq != nil {
w.Write(s[start:end])
w.Write(escSeq)
start = end + 1
isEntity, entityEnd := nodeIsEntity(s, end)
if isEntity && !escapeValidEntities {
w.Write(s[start : entityEnd+1])
start = entityEnd + 1
} else {
w.Write(s[start:end])
w.Write(escSeq)
start = end + 1
}
}
end++
}
@ -28,6 +42,28 @@ func escapeHTML(w io.Writer, s []byte) {
}
}
func nodeIsEntity(s []byte, end int) (isEntity bool, endEntityPos int) {
isEntity = false
endEntityPos = end + 1
if s[end] == '&' {
for endEntityPos < len(s) {
if s[endEntityPos] == ';' {
if entities[string(s[end:endEntityPos+1])] {
isEntity = true
break
}
}
if !isalnum(s[endEntityPos]) && s[endEntityPos] != '&' && s[endEntityPos] != '#' {
break
}
endEntityPos++
}
}
return isEntity, endEntityPos
}
func escLink(w io.Writer, text []byte) {
unesc := html.UnescapeString(string(text))
escapeHTML(w, []byte(unesc))